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GEORGE E. NEWELL, o-E PAWTUGKET, RHODE ISLAND.

Letters Patent No. 73,918, dated Mmmm/2S, 1.868.

IMPROVEMENT IN DUMPING-GA'RI'S,

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TO ALL WHOM IT MAY CONCERN:

Be it linown that I, GEORGE E. NEWELL, of Pawtucket, inv the county of Providence, and-State of Rhode Island, have invented a new and useful Improvement in Dumping-Carts and I do hereby declare that the fol-` lowing specification, taken in connection with the drawings making a part of the saine, is a full, clear, and enactA description thereof. Y

The drawing exhibits in perspective a cart with mylimprovement attached, 'the body of the cart being also traced iu red outline, to show its position when dumping its loadw The object of my improvement is to provide aconvenient meausifor raising-the forward end of a cart-body, for the purpose of enabling it to discharge its load. v

In the drawings, A represents'the body of an ordinary four-wheeled cart similar to the carts commonly used in citieshfor carrying coals. Upon the fork lof the tongue, or other convenient place 4in `front of the cart, I mount a platform, B, which gives support to the fo'ot of a toothed rack,'C, which rack rises to the height thatl is necessary to tilt the body of kthe cart to change the centre ot" gravity of-the load suiciently to enable it to be discharged. This rack is pivoted to'thetlower end ofthe platformgso as to admit of a movement by which it shall Vin all positions ofthe cart-body always remain in gear with .the pinion which engages with it. Attached to the body of the cart are the two side pieces b b, which serve as bearings for the axles c de, and ofthe friction- 'rolljl The axle c is furnished with a crank, g,.and it carries also thernotched wheel L, lwith the teeth of which a stop=dog, e', can at pleasurehe made to engage. Upon the end of the aille c, opposite to the end that carries the crank,- is aixed theA toothed wheel Ic. The axle d is provided with .the two gear-wheelsland m, one ofA which, l, is moved by the gear lcI upon the crank-axle, and 'receives from it'its motion. The other gear, m, upon this axle d, works into and imparts motion to another gear, 'rt, fastened to a third aille, E. Upon this latter ax e is fastened/the pinion o, whose teeth act upon those of the toothed rack C, heretofore mentioned. Bearing against the side of the rack C, opposite to` that on which'lies the pinion o, is placed the friction-roller f, which has its bearings in the side pieces b b, which support the axle of the pinihn o, and serves in all positions of the vcart-body to keep the teeth of the rack properly engaged with those-of the pinion. I t is quite evidentthat if the crank is operated to turn the axle c, such motion will be imparted to the pinion o upon the axleE, byy means of the gears 7c lm n, placed as described, and the cart-body can be 'readily tilted. By means of the dog z' and notched wheel it, theposition of the cart-body can be'maintained at any desired point, or when down can` be kept from tilting; while the power necessary to be applied to raise the forward end-of the cart-body can be varied in any required degree hy changing the relative diameters of the gears k Z m n o.

I do not claim broadly the use of a -rack and pinion,.in combination with a cart-body, forvthe purpose of more conveniently elevating the forward end of such cart-body, as I am -aware that similar devices for such purpose have heretofore `been employed; but i i What IA do claim-as my invention, andidesire' to secure by Letters Patent, is

1. The combination and arrangement of the hinged rack C, the train of gear-wheels c lm a o, and the v pressure-rollerf, with the hotly of a dumping-cart,*substantially as described, for'the purposes'specitied.

2. -Combining with the hingedrack C a pressurerolleiyf, for the purpose of keeping the teeth of the rack in engagement with the teeth of its operating pinion at all positions of the cart-body, substantially fas described.

y GEORGE E. NEWELL.

, Witnesses:

C. L. PENDLEroN, I. M. Coscnmvr 

